/*
 * Copyright 2022 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { EventParams, EventSubscriber } from '@backstage/plugin-events-node';

/** @public */
export class TestEventSubscriber implements EventSubscriber {
  readonly name: string;
  readonly topics: string[];

  readonly receivedEvents: Record<string, EventParams[]> = {};

  constructor(name: string, topics: string[]) {
    this.name = name;
    this.topics = topics;
  }

  supportsEventTopics(): string[] {
    return this.topics;
  }

  async onEvent(params: EventParams): Promise<void> {
    this.receivedEvents[params.topic] = this.receivedEvents[params.topic] ?? [];
    this.receivedEvents[params.topic].push(params);
  }
}
